Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration
The objective of this study was to determine the effects of physically effective neutral detergent fiber (peNDF) content in total mixed ration (TMR) on dry matter intake, digestibility, and chewing activity in fattening Hanwoo (Bos taurus coreanae) heifers. The experiment was designed as a replicate...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2016-12-01
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| Series: | Asian-Australasian Journal of Animal Sciences |
| Subjects: | |
| Online Access: | http://www.ajas.info/upload/pdf/ajas-29-12-1719.pdf |
| _version_ | 1819211032003870720 |
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| author | Mi Rae Oh Heeok Hong Hong Liang Li Byong Tae Jeon Cheong Hee Choi Yu Ling Ding Yu Jiao Tang Eun Kyung Kim Se Young Jang Hye Jin Seong Sang Ho Moon |
| author_facet | Mi Rae Oh Heeok Hong Hong Liang Li Byong Tae Jeon Cheong Hee Choi Yu Ling Ding Yu Jiao Tang Eun Kyung Kim Se Young Jang Hye Jin Seong Sang Ho Moon |
| author_sort | Mi Rae Oh |
| collection | DOAJ |
| description | The objective of this study was to determine the effects of physically effective neutral detergent fiber (peNDF) content in total mixed ration (TMR) on dry matter intake, digestibility, and chewing activity in fattening Hanwoo (Bos taurus coreanae) heifers. The experiment was designed as a replicated 3×3 Latin square using 12 heifers. Fattening heifers were offered one of three diets [high (T1), medium (T2), and low (T3) peNDF] obtained by different mixing times (3, 10, and 25 min) for the same TMR feed. The peNDF content of TMR was determined by multiplying the proportion of dry matter retained by a 1.18 mm-screen in a Penn State Particle Separator by the dietary NDF content. The peNDF1.18 content was 30.36%, 29.20%, and 27.50% for the T1, T2, and T3 diets, respectively (p<0.05). Dry matter intake was not affected by peNDF content in TMR. Total weight gain in T1 group was significantly higher (p<0.05) than in T2 and T3 groups. However, weight gain did not differ between T2 and T3 groups. The feed conversion ratio decreased with an increase in the peNDF content (T1: 12.18, T2: 14.17, and T3: 14.01 g/g). An increase in the peNDF content of TMR was associated with a linear increase in the digestibility of dry matter, crude protein, crude fiber, neutral detergent fiber, and acid detergent fiber (p<0.05). Also, an increase in peNDF content of the TMR resulted in a linear increase in the number of chews in eating and ruminating (p<0.05), and consequently in the number of total chews (p<0.05). These results indicate that peNDF content affects digestibility and chewing activity. Consequently, the peNDF content of TMR should be considered for improving feed efficiency, digestibility, body weight gain, and performance in fattening heifers. |
| first_indexed | 2024-12-23T06:20:37Z |
| format | Article |
| id | doaj.art-b257a78992c3439cbaa272bbcbbd07de |
| institution | Directory Open Access Journal |
| issn | 1011-2367 1976-5517 |
| language | English |
| last_indexed | 2024-12-23T06:20:37Z |
| publishDate | 2016-12-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Asian-Australasian Journal of Animal Sciences |
| spelling | doaj.art-b257a78992c3439cbaa272bbcbbd07de2022-12-21T17:57:13ZengAsian-Australasian Association of Animal Production SocietiesAsian-Australasian Journal of Animal Sciences1011-23671976-55172016-12-0129121719172410.5713/ajas.16.034423594Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed RationMi Rae Oh0Heeok Hong1Hong Liang Li2Byong Tae Jeon3Cheong Hee Choi4Yu Ling Ding5Yu Jiao Tang6Eun Kyung Kim7Se Young Jang8Hye Jin Seong9Sang Ho Moon10 Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, Korea Department of Medical Science, School of Medicine, Konkuk University, Seoul 05029, KoreaThe objective of this study was to determine the effects of physically effective neutral detergent fiber (peNDF) content in total mixed ration (TMR) on dry matter intake, digestibility, and chewing activity in fattening Hanwoo (Bos taurus coreanae) heifers. The experiment was designed as a replicated 3×3 Latin square using 12 heifers. Fattening heifers were offered one of three diets [high (T1), medium (T2), and low (T3) peNDF] obtained by different mixing times (3, 10, and 25 min) for the same TMR feed. The peNDF content of TMR was determined by multiplying the proportion of dry matter retained by a 1.18 mm-screen in a Penn State Particle Separator by the dietary NDF content. The peNDF1.18 content was 30.36%, 29.20%, and 27.50% for the T1, T2, and T3 diets, respectively (p<0.05). Dry matter intake was not affected by peNDF content in TMR. Total weight gain in T1 group was significantly higher (p<0.05) than in T2 and T3 groups. However, weight gain did not differ between T2 and T3 groups. The feed conversion ratio decreased with an increase in the peNDF content (T1: 12.18, T2: 14.17, and T3: 14.01 g/g). An increase in the peNDF content of TMR was associated with a linear increase in the digestibility of dry matter, crude protein, crude fiber, neutral detergent fiber, and acid detergent fiber (p<0.05). Also, an increase in peNDF content of the TMR resulted in a linear increase in the number of chews in eating and ruminating (p<0.05), and consequently in the number of total chews (p<0.05). These results indicate that peNDF content affects digestibility and chewing activity. Consequently, the peNDF content of TMR should be considered for improving feed efficiency, digestibility, body weight gain, and performance in fattening heifers.http://www.ajas.info/upload/pdf/ajas-29-12-1719.pdfPhysically Effective Neutral Detergent FiberChewing ActivityDigestibilityDry Matter IntakeFattening HeiferTotal Mixed Ration |
| spellingShingle | Mi Rae Oh Heeok Hong Hong Liang Li Byong Tae Jeon Cheong Hee Choi Yu Ling Ding Yu Jiao Tang Eun Kyung Kim Se Young Jang Hye Jin Seong Sang Ho Moon Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration Asian-Australasian Journal of Animal Sciences Physically Effective Neutral Detergent Fiber Chewing Activity Digestibility Dry Matter Intake Fattening Heifer Total Mixed Ration |
| title | Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration |
| title_full | Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration |
| title_fullStr | Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration |
| title_full_unstemmed | Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration |
| title_short | Effects of Physically Effective Neutral Detergent Fiber Content on Intake, Digestibility, and Chewing Activity in Fattening Heifer Fed Total Mixed Ration |
| title_sort | effects of physically effective neutral detergent fiber content on intake digestibility and chewing activity in fattening heifer fed total mixed ration |
| topic | Physically Effective Neutral Detergent Fiber Chewing Activity Digestibility Dry Matter Intake Fattening Heifer Total Mixed Ration |
| url | http://www.ajas.info/upload/pdf/ajas-29-12-1719.pdf |
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